BlackRock MuniAssets Fund, Inc. is a closed-end investment fund/investment trust. Its investment objective is to provide income exempt from U.S. federal income taxes by investing primarily in a portfolio of medium to low grade and unrated municipal obligations, the interest on which, in the opinion of bond counsel to the issuer, is exempt from U.S. federal income taxes. The company was founded on June 15, 1993 and is headquartered in Wilmington, DE.